Half to thomas milton shapto



(No Model.)

T. W. WOOD.

SPIRIT LEVEL.

No. 280,706. Patented July s, 188s..

WITNESSES: I I INVENTOR 'mwxova W. WUO. BY gjm/,c Q

ATTORNEYS N. Farms. Phmwumognpher. wnhmgmn. D. c.

UNITED! STATES PATENT FFIC.

THOMAS W. woon, oF ASBURY PARK, NFW JERSEY, ASSIGNOF OF ONF-v HALF ToTHOMAS MILTON sHAFTo, OF SAME FnAon.

SPIRIT-LEVEL.

SPECIFICATION forming part of Letters Patent No. 280,706, dated July 3,1883.

Application filed February 20, 1883.

To @ZZ whom it may concern:

Be it known that I, THOMAS W. WOOD, a citizen of the United States,'residing at Asbury Park, inthe county of Monmouth and 54 State of NewJersey, have invented new and useful Improvements in Spirit-Levels ofwhich the following is a specification.

This invention relates to a spirit-level, the stock of which isconstructed ofsheet met-al, so

1 o that the cases containing the vials can be readily adjusted therein.A

The peculiar construction of the various parts which constitute myspirit-lcv el 'is pointed out in the following specification andillustrated in the accompanying drawings, in

which- Figurel represents a plan or top view. Fig.. 2 is a longitudinalvertical section. Fig. 3 is a transverse section in the plane a' x, Fig.2.

2O Fig. et is a similar section in the plane 1/ y,

Fig. 2.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates the Stock of my spirit-level.This stock is constructed of two metallic side plates, c a., twometallic end pieces, b I), a metallic top plate, c, and a metallicbottom plate, d. The end pieces, b b, and the top and bottom plates, cd, are ma'de of sufficient thickness so that 3o holes can be boredthrough them to receive I the rivets e c; and if all the plates are gotup with sufficient care, and the 'end pieces and the top and bottomplates are secured in position by the rivets e, a stock is obtained theopposite edges and sides of which are perfectly parallel 'to each other,while all the corners form right angles, such qualities being essentialfor the stock of a spirit-level. At the same time, inthe interior of thestock, a space 4o is formed amply large enough for the reception of thecases containing the vials. The top plate, c, is made in three section,c/ c2c, the end sections, c c3, being provided at their inner ends withoffsets j' g, respectively, while themiddle section, c, is provided atboth ends 'with offsets h z', respectively, said offsets being all madeof the same depth. The offsets i and g are intended to receive the endsof the topplate, k, of the frame B, which supports the case 5o C,containing the vial D, while the offsets f h serve to Support a plate,Z, to which is secured (No model .l

the frame E, which supports the case F, containing the vial G. The plateIt' is secured in the offsets t' f/ by screws m a, and when so securedits outer surface is 'flush with the top plate, c, of the stock A. theplatel is secured in the offsets j" h by screws 0 p. Openings q in theside plates, a' a, of the stock expose the vial G, the vial D beingvisible through anopening, r, in the plate lr.

From this description it will be seen that in my hollow metallic stock Athe vials D G- can be secured with the greatest possible accuracy. Forthe purpose of adjusting the vial D, l provide the case C with a rib, s,which is fastened at about the middle of its length to the -i'rame B bymeans of a pivot, t. In the frame B are secured two screws, au,theconical ends of which catch beneath the ribs s of the case C. (SeeFig. 4.) By releasing one of these screws and screwing up theother thevial can be adjusted, and when it has reached the re-` quired positionit can be firmly locked. The vial G- is also adjusted by a pointedscrew, o, bearing upon a rib, 10,011 the case F; but in this case oneend of the case is supported by a spring, o.

What l. claim as new, and by Letters Patent, is-

1. rFhe combination, substanti ally as hereindesire to secure In thesame manner before described, of the case C, which contains the vial D,with the hollow metallic stock A, the top plate of which is providedwith offsets i g, to admit the plate l: of the frame support- .ing thecase G.

2. The combination, substantially as hereinbefore described, of the caseC, which contains the vial D, and of the ease F, which contains the vialG, with the hollow metallic stock A, the top plate of which'is providedwith offsets f h i g, to receive the plates'll' of the frames supportingthe cases C F.

3. The stock A, constructed of metallic side plates, a c, end pieces, bb, bottom plate, d, and top plate, c, the end pieces and the top andbottom plates being secured to the side plates, a a, by transverserivets c e, substantially as shown and described. A

4C. The combination, with the metallic side plates, c c, the end pieces,b I), the bottom plate, d, and the sectional. top plate, c, of twovials, D G, secured to the top plate, c, substantially in IOO the mannerand for The mrpose shown and described.

5, The combination, substantially als hereinv before described, ot' thecase C, containing the vini D, the ri b formed :it the bottoni oi'snidense, the pivot for connecting said rib to tbe frzune B, and the twoadjusting-screws u yu, the eonienl ends of which benr against the undersnrfuee of the rib.

(i. The combination, substantially as hereinbei'ore deseribed, of J[heease F, containing the vini G, the rib formed on the under side of sai dIn testimony Wbereol'l have hereunto set 1n y hand in The presence oftwo snbseril'iing` wil'- nesses.

THOMAS \V. 'rOOD.

Witnesses:

IsAAr.: (E. KENNEDY, JNO. H. KLEEM.

